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https://elib.bsu.by/handle/123456789/288416
Заглавие документа: | Microscopic quantum description of second-order nonlinearities in two-dimensional hexagonal nanostructures beyond the Dirac cone approximation |
Авторы: | Avetissian, H.K. Mkrtchian, G.F. Batrakov, K.G. Maksimenko, S.A. |
Тема: | ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика |
Дата публикации: | 2020 |
Издатель: | American Physical Society |
Библиографическое описание источника: | Phys Rev B 2020;102(16). |
Аннотация: | Single layers of hexagonal two-dimensional nanostructures such as graphene, silicene, and germanene exhibit large carrier Fermi velocities and, consequently, large light-matter coupling strength making these materials promising elements for nano-optoelectronics. Although these materials are centrosymmetric, the spatial dispersion turns out to be quite large allowing the second-order noninear response of such materials to be comparable to the noncentrosymmetric 2D ones. The second-order response of massless Dirac fermions has been extensively studied, however, a general approach correct over the full Brillouin zone is lacking so far. To complete this gap, in the current paper, we develop a general quantum-mechanical theory of the in-plane second-order nonlinear response beyond the Dirac cone approximation and applicable to the full Brillouin zone of the hexagonal tight-binding nanostructures. We present explicit calculation of the nonlinear susceptibility tensor of 2D hexagonal nanostructures applicable to arbitrary three-wave mixing processes. |
URI документа: | https://elib.bsu.by/handle/123456789/288416 |
DOI документа: | 10.1103/PhysRevB.102.165406 |
Scopus идентификатор документа: | 85096106107 |
Финансовая поддержка: | This work was supported by the RA Science Committee and Belarusian Republican Foundation for Fundamental Research in the frames of the joint research project SC 18BL-020 and BRFFR F19ARM-017 accordingly. |
Лицензия: | info:eu-repo/semantics/openAccess |
Располагается в коллекциях: | Статьи НИУ «Институт ядерных проблем» |
Полный текст документа:
Файл | Описание | Размер | Формат | |
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2005.07024.pdf | 1,09 MB | Adobe PDF | Открыть |
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